Is There a Role for Hyperthermia in the Treatment of HIV Infection?

Extracorporeal whole body hyperthermia treatment of HIV patients, a feasibility study

The literature supports that the retrovirus, Human Immunodeficiency Virus (HIV), which is thought to cause Acquired Immunodeficiency Syndrome (AIDS), is heat sensitive at temperatures which can be achieved in man. Invasive or non-invasive induction of whole body hyperthermia (WBH) has been used to treat an array of illnesses, primarily in the field of oncology, until recently. Non-invasive methods have proven to be less toxic than invasive means. However, new technology and refined patient management have shown a dramatic decrease in the side effects with extracorporeal whole body hyperthermia (EWBH). The Food and Drug Administration granted a prospective trial for six HIV positive/AIDS patients to undergo a single treatment of EWBH, with patients randomized to a core temperature of either 41 or 42 degrees C. All patients had failed antiretrovirals and experienced at least one episode of an opportunistic infection. Organetics, Ltd., PS-1 extracorporeal, centrifugal pump device was used to induce EWBH. Results of this feasibility study demonstrated the ability of this equipment and technique to induce EWBH with acceptable toxicity. It was not possible to assess efficacy in this small study.

Effect of whole-body hyperthermia on AIDS patients with Kaposi's sarcoma: a pilot study

The safety and possible efficacy of extracorporeal whole-body hyperthermia (WBHT) were evaluated in the first FDA-approved feasibility study of WBHT in persons with AIDS. Six gay men, aged 20-50 years, CDC class C-3, underwent 1 h of WBHT at either 40 degrees C or 42 degrees C, employing a system that minimizes the physiological and biochemical changes that occur during WBHT. All subjects had Kaposi's sarcoma (KS), were free of opportunistic infections, and had significant elevations of plasma HIV RNA. During the treatment, there were no adverse side effects and all subjects tolerated WBHT without problems. KS lesions partially regressed immediately following WBHT in all subjects but returned to pretreatment status in five of six patients at 1 week. In subjects treated at 40 degrees C, CD4 counts decreased during the 8-week follow-up period; they remained unchanged, however, following 42 degrees C WBHT. Viral load remained unchanged following WBHT in subjects treated at 40 degrees C. Treatment at 42 degrees C resulted in an immediate reduction in HIV RNA that was not sustained at 1 week post-WBHT. We conclude that WBHT is safe in subjects with advanced HIV disease and that it may have a role in treating HIV infection. A larger controlled trial involving two treatments in less immunocompromised subjects is currently in progress to test this hypothesis.